Working together, they designed a flashing-LED project that
uses Wire Glue instead of solder to make connections. They even used aluminum
foil to make the battery connections, something solder couldn't do, and it
was a lead-free project too. The result was a fun project that demonstrates
the basics of electricity, and it was made without soldering.

Problem

Charlie J. of Bison, North Dakota wanted a science fair project
for his son that would be fun to build and relevant to today's environmental
issues.